Door-hanger.



L. T. WEISS, JR.

DOOR HANGER.

APPLICATION FILED APR. 3, 1913.

Patented Jan. 20, 1914.

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DOOR HANGER.

APPLICATION FILED APR. s, 1913.

Patented Jan. 20, 1914.

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LOUIS T. WEISS, .13., OF NEW YORK, N. Y., ASSIGNOR TO RELIANCE BALL BEARING DOOR HANGER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

D OOH-HANGER.

Specification of Letters Patent.

Patented Jan. 20, 1914.

To all whom.- it may concern:

Be it known that I, LoUIs T. WVnIss, J r.,

a citizen of the United States, residing in the borough of Brooklyn of the city of New York, in the State of New York, have invented certain new and useful Improvements in Door-Hangers, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

This invention relates particularly to two or three speed hangers for sliding doors movable in the same direction only, in which the several doors or leaves of the compound door are connected so that the several doors have different speeds and all reach the open or closed position at the same time. In constructions of this character now generally in use a fixed rack is provided and in engagement with this rack is a pinion which in turn is in engagement with a movable rack carried on one of the movable doors. The pinion is usually carried on another of the movable doors. By this arrangement it will be evident that upon movement of the pinion carrying door the pinion will be rotated and will transmit movement to the other door with the movable rack of which the pinion is in engagement. In this manner the rack carrying door is given a speed equal to twice that of the pinion carrying door, as will be understood.

It is an object of this invention to provide improved devices by which varying ratios of speed between two or more doors traveling in the same direction may be secured.

It is a further object to render unnecessary the employment of the fixed rack hitherto used and mount the several racks upon the several moving doors respectively, relative movement between the doors being brought about by interposed gearing mounted on a fixed axis.

The invention will be more particularly described hereinafter with reference to the accompanying drawings in which Figure 1 is a fragmentary View in front elevation of a hanger embodying the present invention, the front plate of the hanger being removed. Fig. 2 is a plan view thereof, parts being broken away in the interest of clearness. Fig. 3 is a sectional view taken on the plane indicated by the line 33 of Fig. 1 and looking in the direction of the arrows. Fig. 4: is a view similar to Fig. 1

showing a slightly modified form of the invention. Fig. 5 is a view in plan of the hanger illustrated in Fig. 4:. Fig. 6 is a sectional view taken on the plane indicated by the line 66 of Fig. 4 and looking in the direction of the arrows.

Since the present invention is not to be limited to the general construction of the hanger, a description of the principal parts will apply to both forms of the hanger illustrated in the accompanying drawings. The door hanger comprises a bracket or supporting plate a adapted to be secured to any available stationary support and by which the other parts of the hanger may be carried. As indicated clearly in Figs. 3 and 6, the supporting plate a may have secured thereto a supporting bracket 6 on which may be secured a top plate 6 and a side plate 6 A fixed track 0 for one of the doors is secured to some part of the supporting structure, such as the plate a and a fixed track cl for the other of the two doors is also secured to some part of the supporting structure, such as the outer plate Z2 Each rail is grooved preferably on both its upper and lower sides, to receive balls 6 which are spaced apart by spacers f as usual. Carriers g and h, grooved internally, cooperate With the tracks 0 and 63 through the balls 6 and are provided With hangers 2' and 70 respectively. The construction thus far described is Well known in the art and comprises features which may be modified at will without departing from the scope of the present invention.

The arrangement of racks and gearing by which the objects of the present invention are realized will now be described. The carrier h is shown as provided with a rack h which is movable with the carrier. The adjacent carrier 9 has secured thereto also a rack g. FiXedly secured within the hanger is a shaft Z on which are secured pinions m and n engaging respectively, when the doors are in closed position, as shown in Fig. 2, with the racks h and g of the door carriers h and g. The relative size of these pinions m and a may be varied as dilferent conditions of use warrant and it will be understood that the relative speed of the two doors with the racks of which these pinions engage is directly proportional to the diameters of these pinions.

The arrangement thus far described would be sufficient to carry out the objects of the present invention if the travel of the door carrier it to its open position, were limited. Reference to Figs. 2 and 5 will indicate, however that the racks h and if, being substantially equal in length to their carriers, will become disengaged from the pinions m and m respectively before the doors reach their open position provided that the pinions are so positioned as to engage said racks when the doors are in closed position. Accordingly, it is necessary to provide in the hanger a duplicate set of pinions m and a designed to engage operatively the two racks h and 9' when the first named rack travels to a point where it is about to become disengaged from the pinion m. Such an arrangement is necessary as the rack it cannot be projected beyond the ends of the door carrier it since this construction would prevent the door from being moved to its complete open or closed position according to whether the rack were projected beyond the rear edge or front edge of the door. It will be understood further that it is necessary for both of the racks to be of such length and relative disposition that they shall be in engagement respectively with the pinions of the same set at all times. In the embodiment herein illustrated the rack g is shown as applied to the slow-speed carrier 9 of the inner door since the outer door is the one usually grasped by the operator and so it is the driving door. This driven rack g is mounted to overhang the ends of its carrier so as to engage the pinion n when the rack it engages the pinion m, and engage the pinion a when the rack it engages the pinion m. In keeping with the general object of facilitating the opening and closing of the doors and in order that the doors, regardless of their width, may reach their open and closed positions simultaneously the rack on the driving door carrier 7L engages the larger of the two pinions, so that, while the required speed relation is secured, a minimum of effort is required.

Reference to Fig. 2 shows that when the doors are in their closed position the driving rack h engages the larger gear m while the driven rack g engages the gear a. WVhen the rack 71. is moved to the left as viewed in said figures rotation is imparted to the gear m and transmitted through the shaft Z and pinion n to the rack g. Just before the right hand end of the rack h becomes disengaged from the gear at the left hand end thereof becomes engaged with the gear on and the rack 9 being engaged with the corresponding pinion a, continued travel of the driving rack it brings about uninterrupted travel of the driven r ck g and its carrier.

A glance at Figs. 3 and 6 shows readily that the two embodiments of the invention herein illustrated are substantially alike save for the fact that the supporting shafts for the sets of pinions m and n, and m and n are disposed vertically in the form shown in Fig. 3, while they are disposed horizontally in the form shown in Fig. 6. In the last named figure the shaft Z carries thereon fixedly two pinions m and n engaging respectively with the racks 77. and 9 the latter being mounted on their respective carriers 72, and 9 Since the axis of the pinions m and n in this embodiment lies in a horizontal plane it will be evident that the racks 7L2 and 9 must have their teeth disposed in a horizontal plane. It is in this respect only that the embodiment shown in Fig. 6 differs from that shown in Fig. 3. The other parts of the hanger are of the same form and disposed in the same relative arrangement as in Fig. 3 and accordingly, it is believed, that a detailed description of these parts need not be repeated.

I claim as my invention:

1. A two-speed door hanger comprising a supporting structure, a plurality of fixed tracks supported by the supporting structure, carriers mounted upon said fixed tracks respectively and movable in the same direction only, movable racks mounted with the carriers, gears secured to a shaft mounted fixedly in the supporting structure and engaging said racks respectively, and independent gears secured to another shaft mounted in the supporting structure and ar ranged to engage said racks respectively when the racks are not engaged with the first named gears.

2. A two-speed door hanger comprising a supporting structure, a plurality of fixed tracks supported by the supporting structure, carriers mounted upon said fixed tracks respectively and movable in the same direction only, a movable rack mounted with one of the carriers and disposed wholly between the ends thereof, gears mounted fixedly in the supporting structure in spaced relationship so that at least one of the gears shall always engage. said rack, a second rack mounted on the other of said carriers, gears mounted fixedly with said first named gears to rotate therewith, the second named rack being disposed to engage always with the corresponding gear with which the first named rack is engaged.

3. A two-speed door hanger comprising a supporting structure, a plurality of fixed tracks supported by the supporting structure, carriers mounted upon said fixed tracks respectively and movable in the same direction only, movable racks mounted with the carriers, gears of different diameters secured to a shaft mounted fixedly in the supporting structure and engaging said racks respectively whereby one carrier has a different speed with respect to another This specification signed and witnessed carrier, and similar gears mounted on an inthis second day of April A. D. 1913.

dependent fixed shaft in the supporting LOUIS T. WVEISS, J R. structure and arranged to engage said racks Signed in the presence of 5 respectively When the racks are not engaged W. B. GREELEY,

with the first named gears. WORTHINGTON CAMPBELL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

